Miniature rose plant named ‘Meiskaille’

ABSTRACT

A new and distinct variety of rose plant of the Miniature Class is provided which abundantly forms in clusters on a nearly continuous basis attractive very double bright Lemon Yellow blossoms that well retain their coloration upon maturity. The growth habit is narrow bushy. Very dense dark green semi-glossy foliage is formed that contrasts nicely with the blossom coloration. Plants of the new variety develop well following budding and following the rooting of cuttings. The new variety is well suited for pot forcing under greenhouse growing conditions to form a distinctive gift plant. Very good tolerance to Oidium Botrytis is displayed.

Botanical/commercial classification: Rosa hybrida/ Miniature Rose Plant.

Varietal denomination: cv. ‘Meiskaille’.

SUMMARY OF THE INVENTION

The new variety of Rosa hybridaMiniature rose plant was created byartificial pollination wherein two parents were crossed which previouslyhad been studied in the hope that they would contribute the desiredcharacteristics. The female parent (i.e., the seed parent) of the newvariety was the product of the cross of the ‘Meineyta’ variety(non-patented in the United States) and an unnamed seedling(non-patented in the United States). The ‘Meineyta’ variety is marketedunder the CUMBA MEILLANDIA trademark. The male parent (i.e., the pollenparent) was the ‘Savagood’ variety (U.S. Plant Pat. No. 7,761). Theparentage of the new variety can be summarized as follows:

(‘Meineyta’×Unnamed Seedling)×‘Savagood’.

The seeds resulting from the above pollination were sown and smallplants were obtained which were physically and biologically differentfrom each other. Selective study resulted in the identification of asingle plant of the new variety.

It was found that the new variety of Miniature rose plant of the presentinvention possesses the following combination of characteristics:

(a) exhibits a narrow bushy growth habit,

(b) forms in abundance in clusters on a nearly continuous basisattractive very double bright Lemon Yellow blossoms that well retaintheir coloration upon maturity,

(c) forms very dense dark green semi-glossy foliage,

(d) develops well following budding and following the rooting ofcuttings, and

(e) is well suited for pot forcing under greenhouse growing conditions.

The new variety well meets the needs of the horticultural industry. Itis particularly well suited for pot forcing under greenhouse growingconditions to form a distinctive gift plant.

The new variety can be readily distinguished from its parentalvarieties. More specifically, the ‘Meineyta’ variety forms bicoloredorange-yellow blossoms and a more divergent growth habit. The ‘Savagood’variety displays small medium yellow urn-shaped blossoms.

The new variety has been found to undergo asexual propagation in Franceby a number of routes, including budding, grafting, and cuttage. Asexualpropagation by the above-mentioned methods as performed in the South ofFrance has shown that the characteristics of the new variety arestrictly transmissible from one generation to another. Good plantdevelopment is displayed regardless of the mode of asexual propagation.

The new variety has been named the ‘Meiskaille’ variety.

BRIEF DESCRIPTION OF THE PHOTOGRAPH

The accompanying photograph shows as nearly true as it is reasonablypossible to make the same, in a color illustration of this character,typical specimens of the plant parts of the new variety. The rose plantsof the new variety were one year of age and were observed during Junewhile growing on their own roots in greenhouses at Le Cannet des Maures,Var, France. Dimensions in centimeters are shown at the bottom of thephotograph.

FIG. 1—illustrates a specimen of a young shoot;

FIG. 2—illustrates specimens of two floral buds before the opening ofthe sepals;

FIG. 3—illustrates specimens of two floral buds at the opening of thesepals;

FIG. 4—illustrates specimens of two floral buds at the opening of thepetals;

FIG. 5—illustrates a specimen of a flower during the course of opening;

FIG. 6—illustrates a specimen of an open flower—plan view—obverse;

FIG. 7—illustrates a specimen of an open flower—plan view—reverse;

FIG. 8—illustrates a specimen of a fully open flower—plan view—obverse;

FIG. 9—illustrates a specimen of a fully open flower—plan view—reverse;

FIG. 10—illustrates a specimen of a floral receptacle showing thearrangement of the stamens and pistils;

FIG. 11—illustrates a specimen of a floral receptacle showing thearrangement of the pistils (stamens removed);

FIG. 12—illustrates a specimen of a flowering stem;

FIG. 13—illustrates a specimen of a main branch;

FIG. 14—illustrates specimens of leaves with three leaflets—planview—upper surface (top), and—under surface (bottom);

FIG. 15—illustrates specimens of leaves with five leaflets—planview—under surface (right), and—upper surface (left); and

FIG. 16—illustrates specimens of leaves with seven leaflets—planview—upper surface (right), and—under surface (left).

DETAILED DESCRIPTION

The chart used in the identification of the colors is that of The RoyalHorticultural Society (R.H.S. Colour Chart). The description is based onthe observation of one year-old specimens of the new variety which wereobserved during June while growing on their own roots in greenhouses atLe Cannet des Maures, Var, France.

Class: Miniature.

Plant:

Height.—Approximately 30 to 35 cm on average at the end of the growingseason.

Width.—Approximately 35 to 40 cm on average at the end of the growingseason.

Habit.—Narrow bushy.

Branches:

Color.—Young stems: near Yellow-Green Group 146C. Adult wood: nearYellow-Green Group 146B.

Thorns.—Size: commonly in excess of 5 mm. Quantity: approximately 9 onaverage on a stem length of 20 cm. Color: near Yellow-Green Group 152Don adult stems. Configuration: rather straight and elongated on theupper surface and slightly concave on the under surface.

Leaves:

Petioles.—Upper surface: smooth, and near Green Group 137B and lightlysuffused with Greyed-Red Group 178A in coloration. Under surface:commonly possess a few tiny prickles and near Green Group 147C incoloration.

Stipules.—Adnate, pectinate, and approximately 1.2 cm in size onaverage.

Leaflets.—Number: 3, 5 (most often), and 7. Shape: generally ellipticwith a symmetrical tip and a rounded base (as illustrated). Texture:consistent. Serration: simple and regular. General appearance: verydense, dark green, and semi-glossy. Size: approximately 2.5 cm in lengthon average, and approximately 1.8 cm in width on average for theterminal leaflet. Color (young foliage): Upper surface: nearYellow-Green Group 146A and edged with Greyed-Red Group 178C. Undersurface: near Yellow-Green Group 146A and edged with Greyed-Red Group178C. Color (adult foliage): upper surface: near Green Group 137A. Undersurface: near Yellow-Green Group 147B.

Inflorescence:

Number of flowers.—Commonly in a flat cluster of approximately 2 to 5per stem.

Peduncle.—Near Yellow-Green Group 146C in coloration, glandular, and thelength commonly is approximately 6 cm on average.

Sepals.—Upper surface: tomentose and near Yellow-Green Group 147C incoloration. Under surface: glandular and near Yellow-Green Group 146Aand 146B in coloration. Shape: with a few foliaceous extensions (asillustrated).

Buds.—Shape: ovoid. Size: medium for class, and approximately 1 to 1.5cm in length. Color: as the calyx breaks near Yellow Group 13A on theupper surface and the under surface. Basal petal spot: none observed.

Flower.—Form: very double, and cup-shaped. Diameter: approximately 6 cmon average when fully open. Color (when blooming): upper surface: brightLemon Yellow, near Yellow Group 13A. Under surface: bright Lemon Yellow,near Yellow Group 13A. Basal petal spot: none observed. Stability ofcoloration: very good with coloration commonly being well maintainedupon full maturity. Fragrance: none. Anthers: regularly arranged aroundthe styles, near Yellow-Orange Group 22A in coloration, andapproximately 0.2 cm in size. Pollen: near Yellow-Orange Group 14A incoloration. Stamen number: approximately 141 on average. Filaments: nearYellow-Orange Group 22B in coloration, and approximately 0.5 cm inlength on average. Pistil number: approximately 96 on average. Petalconfiguration: wedge-shaped base, with an acuminate tip, and edges thatare undulated and reflexed. Petal number: approximately 44 to 46 onaverage under normal growing conditions. Petal texture: strong. Petalarrangement: imbricated. Petal drop: good, the petals commonly detachcleanly before drying. Stigmas: near Yellow-Orange Group 19C incoloration. Styles: near Yellow Group 2D in coloration, andapproximately 1 cm in length on average. Stigma: near Yellow Group 2D incoloration, and approximately 0.1 cm in size on average. Receptacle:smooth, near Yellow-Green Group 146A in coloration, pitcher-shaped inlongitudinal section, approximately 0.9 cm in length on average, andapproximately 1 cm in width on average. Hips: near Yellow-Orange Group23B in coloration. Seeds: commonly approximately 12 per hip, and nearYellow-Orange Group 18D in coloration. Lasting quality: very long on theplant with the blossoms commonly lasting approximately 10 to 12 days onaverage.

Development:

Vegetation.—Strong.

Blooming.—Very abundant and nearly continuous.

Resistance to diseases.—Very good tolerance to Oidium Botrytis, andslight sensitivity to Black Spot.

Aptitude to bear fruit.—Good.

I claim:
 1. A new and distinct variety of Miniature rose plantcharacterized by the following combination of characteristics: (a)exhibits a narrow bushy growth habit, (b) forms in abundance in clusterson a nearly continuous basis attractive very double bright Lemon Yellowblossoms that well retain their coloration upon maturity, (c) forms verydense dark green semi-glossy foliage, (d) develops well followingbudding and following the rooting of cuttings, and (e) is well suitedfor pot forcing under greenhouse growing conditions; substantially asherein shown and described.